Improvement in furnace tor annealing tacks, nails



,tait/ia @anni tire.

G. PAULL, OF FAIR HAVEN, MASSACHUSETTS, ASSIGNOR TO AMERICAN TACK COMPANY, OF SAME PLACE.

Letters Patent No. 88,805, dated April 13, 1869.

IMPROVEMENT IN FURNACE PQR ANNEALING TACKS, NAILS, 8m.

The Schedule referred to in these Letters Patent and making part Gf the same.

To all whom it may concern Be it known that I, E.G. PAULL, of Fair Haven, in the county of Bristol, and in the State of Massachusetts, have invented certain new and useful Improvements in Furnace for Bluing, Heating, and Annealiug Tanks, Nails, and other articles and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in the construction of a furnace for bluing, heating, and annealing tacks, nails, 85o., and providing the same with a bottom, so adjusted that it may be turned do'wn for the purpose of removing articles from the same.

. In order to enable others skilled in the art to which my invention appertaids, to make and use the same, I will now proceed to -describe its construction'and operation, referring to the annexed drawings, which form a part of this ,specificatiom and in which- Figure 1 is a longitudinal vertical section;

Figure 2 is a plan view, with the top of the tire-box removed; and

Figure 3 is a cross-section.

Arepresents a furnace used for bluing, heating, and annealing tacks, nails, Ste., which furnace is divided into two compartments, B, the re-box, and O, the

pan, in which the articles to be treated are placed.

A bridge, D, divides the fire-box from the pan, leaving an aperture, a, 'at the top of said bridge, through which the flame from the fire passes into the pan.

E represents a hinged perforated plate, forming the grating of the tire-box, underneath which is an airbox, F, through which a blast of wind is introduced, forcing the flame over the bridge D.

The air-box Fis provided with ahinged bottom, G, opening downward', to remove ashes and cinders, the grating E alsoopeni'ng downward. The grating is held up in position by a pin,4 b, as seen in fig. 1.

The bottom H, of the pan O, is hinged on one side, and provided with sides I I, projecting a suitable distance upward in the pan.

The bottom H is held up in proper position by a pin, c, catching on a latch, d, or by any other suitable means.

The articles to be heated are placed in the panO, on the bottom H, through the door J, by means of a. scoop, or other suitable instrument, and when sufiiciently heated by the llame playing on them as' above mentioned, the bottom is dropped, and the articles allowed to fall out into a box placed to receive them.

Having thus fully described my invention,

What I claim as new, and desire to secure by Letters Patent, is

1. Constructing a furnace, with a bottom so' adjusted that it may be turned down, for'the purpose of removing articles from the same, substantially as herein set forth.

2. .The arrangement of the furnace A, with a bridge, D, dividing the fire-box, B, from the pan O, and said pan provided'with an adjustable bottom, substantially as and for the purposes herein set forth.

In testimony that I claim the foregoing, I have hereunto set my hand, this 4th day of February, 1869.

E. G. PAULL.

Witnesses:

Geo. F. TRIPP, OHAs. DREW. 

